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    <title>Document</title>
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<script>
    function make_pow(n) {
        return function (x) {
            return Math.pow(x, n);
        }
    }
    var pow2 = make_pow(2);
    var pow3 = make_pow(3);
    console.log(pow2(5)); // 25
    console.log(pow3(7)); // 343

</script>

</html>